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Process for preparing calcined kaolin for electrophoretic paint from gangue

A technology of calcining kaolin and coal gangue, which is applied in the direction of electrophoretic coating, coating, silicate, etc., can solve the problem of low kaolin index and achieve the effect of uniform product structure and composition

Active Publication Date: 2017-02-15
山西晋坤矿产品股份有限公司
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  • Application Information

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Problems solved by technology

[0016] The present invention provides a process for preparing calcined kaolin for electrophoretic paint from coal gangue in order to solve the problem of low index existing in the preparation of kaolin from coal gangue

Method used

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  • Process for preparing calcined kaolin for electrophoretic paint from gangue

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Embodiment 1

[0032] Technological process: Coal gangue raw ore → primary dry iron removal → crushing → secondary dry iron removal → dry grinding → part of raw meal and part of clinker plus tap water to make slurry (solid content of slurry is 60%, and the solid part is composed of ingredients : 325 mesh coal gangue raw powder 40%, 4000 mesh calcined coal gangue clinker powder 60%, sodium polyacrylate 0.3%) → primary wet iron removal → wet grinding → secondary wet iron removal → sieve 200 mesh , 325 mesh, 500 mesh vibrating sieve → three times of wet iron removal → one drying → dispersing → calcining (around 980°C) → dispersing → product.

[0033] The process of this application is introduced as follows: the raw coal gangue is crushed by a hammer crusher to a particle size below 30mm, and the mechanical iron impurities and magnetic substances in the minerals brought in during the crushing process are removed by dry iron removal twice, and then sent to the Hurricane Mill Further pulverize to ...

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Abstract

The invention relates to the preparation technology of kaolin from gangue, and concretely relates to a process for preparing calcined kaolin for electrophoretic paint from gangue. The process solves the problem of lower index existed in prior preparation of kaolin from gangue, and the process for preparing calcined kaolin for electrophoretic paint from gangue is provided. A route of the process comprises the following steps: preparation of gangue raw ore; primary dry method deironing; fragmentation; secondary dry method deironing; dry method ore grinding; tap water is added into partial raw materials and partial clinker for pulping; primary wet method deironing; wet method ore grinding; secondary wet method deironing; sieving with a 200 mesh sieve, a 325 mesh sieve, and a 500 mesh vibrating screen; third-time wet method deironing; primary drying; scattering; calcining; scattering; and obtaining of the product. The process solves the problems of fineness and conductivity of calcined kaolin products for electrophoretic paint, and the product quality can satisfy requirements of clients for the granularity index, the conductivity index and the like of the calcined kaolin products for electrophoretic paint.

Description

technical field [0001] The invention relates to a technology for preparing kaolin from coal gangue, in particular to a process for preparing calcined kaolin for electrophoretic paint with coal gangue. Background technique [0002] Kaolin is a new type of non-metallic mineral powder material that has been continuously improved in all aspects. It has unique properties and its application range is continuously expanding. Widely used in papermaking, rubber, plastics, cables, ceramics, paint coatings and other fields, it plays an important role in the development of modern high-tech industries and the upgrading and progress of traditional industrial products. Coal gangue is a kind of coal-based kaolin. Its characteristic is that the raw ore itself is dark brown, and its whiteness is higher after calcination. and refractory materials. Different processing techniques can endow products with different application functions, and the object of the present invention is the technique ...

Claims

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Application Information

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IPC IPC(8): C01B33/26C09D5/44
CPCC01B33/26C01P2004/51C01P2006/40C01P2006/60C01P2006/63C01P2006/64C09D5/448
Inventor 曹永新李亚军李文杰刘继文任向上贾旺高祥计富贵张海
Owner 山西晋坤矿产品股份有限公司
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